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ppmrelief - run a Laplacian relief filter on a portable pixmap
ppmrelief
[ppmfile]
Reads a portable pixmap as input. Does a Laplacian
relief filter, and writes a portable pixmap as output.
The Laplacian relief
filter is described in "Beyond Photography" by Holzmann, equation 3.19. It's
a sort of edge-detection.
pgmbentley(1)
, pgmoil(1)
, ppm(5)
Copyright
(C) 1990 by Wilson Bent (whb@hoh-2.att.com)
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